Title:
擬似移動床におけるパラキシレンの改善された分離の方法および装置
Document Type and Number:
Japanese Patent JP2010535178
Kind Code:
A
Abstract:
Process for separating paraxylene with a purity that is at least equal to 99.5% by weight from an aromatic feedstock F in a single adsorption stage in a simulated moving bed (SMB), comprising different numbers of beds, allocated to a zone 1 between the supply of the desorbent D and the draw-off of the extract E; a zone 2 between the draw-off of the extract E and the supply of the feedstock F; a zone 3 between the supply of the feedstock and the draw-off of the raffinate R; a zone 4 between the draw-off of the raffinate R and the supply of the desorbent D, wherein an SMB of 12 adsorbent beds has bed configuration (2, 5, 3, 2), an SMB of 15 adsorbent beds has bed configuration (3, 6, 4 , 2), or an SMB of 19 adsorbent beds has bed configuration (4, 7, 6, 2), wherein the desorbent in this latter case is paradiethylbenzene.
Inventors:
Leflieve Philibert
Rheinkugel Lecoq Damian
Wolf rucksack
Rheinkugel Lecoq Damian
Wolf rucksack
Application Number:
JP2010518705A
Publication Date:
November 18, 2010
Filing Date:
June 24, 2008
Export Citation:
Assignee:
ENI S.P.A.
International Classes:
C07C7/12; B01D15/00; C07C15/08
Domestic Patent References:
| JP2002308803A | 2002-10-23 | |||
| JPH05201886A | 1993-08-10 | |||
| JPH0639206A | 1994-02-15 |
Attorney, Agent or Firm:
Norihiko Hibi
Einosuke Kishimoto
Akira Watanabe
Matsumura Naoto
Einosuke Kishimoto
Akira Watanabe
Matsumura Naoto